Wal-Mart(WMT), DirecTV(DTV) and Actavis(ACT) are set to report quarterly earnings before the opening bell. Actavis shares soared earlier this week when it said it would buy Forest Laboratories(FRX) for $25 billion.

Hewlett-Packard(HPQ), Groupon(GRPN) and Priceline.com(PCLN) are among the companies reporting earnings after the bell.